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AlexandruLeca
role=
I build and scale systems, end to end.
Infrastructure, backend, AI workflows, deployments, and the teams that run them. Fourteen years in startups and growth-stage product teams. I stay hands-on, from the system internals up to the people shipping it.
- 14+
- years building & shipping
- 2011 → today
- 10+
- engineering teams led
- startups → growth-stage
- 35+
- projects overseen
- across clients & products
- 20+
- team members led
- career high
- ~$4M/yr
- cloud cost saved
- career high
- 10×
- faster delivery
- career high
About
I work end-to-end: infrastructure, backend architecture, AI workflows, deployment environments, and the teams running them. I've led cross-functional engineering teams and set technical direction for whole orgs. I'm just as comfortable mapping a tangled legacy system as I am deciding where a growing product goes next.
What I keep coming back to: removing the friction between people and the systems they build. Through process, automation, and architecture that actually holds up.
# Core competencies
- Cross-functional Team Leadership
- Engineering Process Optimization
- Technical Vision & Feasibility
- Architectural Problem-Solving
- Mentoring & Team Growth
- Client-Facing Communication
- Roadmap & Workload Planning
# Education
Bachelor of Science (BSc)
'Titu Maiorescu' University, Bucharest
Faculty of Information Technology
Sep 2008 — Jul 2011
Assistant Analytic Programmer
'I.N. Socolescu' Highschool, Bucharest
Real Profile, Intensive Computer Science
Sep 2004 — Jul 2008
# Languages
- EnglishNative / Bilingual
- RomanianNative
Experience
Chief Technology Officer · Bright Spacescurrent
Oct 2024 — Present · BucharestEngineering direction for a cross-functional product org, redesigning how the technical and operational sides work together.
- ›Scaled a cross-functional team of 7 developers and 8 3D artists while redesigning technical and operational workflows.
- ›Owned engineering direction, inter-departmental communication, and workload design, clearing operational bottlenecks between engineering, product, and 3D.
- ›Reduced delivery time from several weeks to under two days through automation workflows and tooling.
- ›Decoupled the core engine into an isolated module and built the tooling layer enabling agentic AI interactivity within the product.
- ›Drove internal adoption of agentic AI workflows (Claude Code) across the engineering team, cutting manual day-to-day overhead.
- Agentic AI
- BabylonJS
- Platform Engineering
- Kubernetes
Principal Software Engineer · Bright Spaces
Jun 2023 — Oct 2024 · BucharestHands-on across the full stack, focused on architectural decisions and the delivery process.
- ›Drove the early groundwork for service isolation and launch / onboarding automation.
- ›Balanced technical execution with engineering process design.
- TypeScript
- Node.js
- Microservices
Principal Software Engineer · Softbinator Technologies
Nov 2022 — Jun 2023 · BucharestTook ownership of undocumented services handed over from an external team and brought the system back to life.
- ›Reverse-engineered intent from undocumented services, restored operability, and got interconnected components working together as originally designed.
- ›Migrated an entire running infrastructure from Asia to Europe with zero downtime. Services, data, and every interdependency stayed intact.
- ›A project-based engagement; it wrapped once the migration and service revival were done.
- Service Migration
- Docker
- Infra
Senior Software Architect · Softbinator Technologies
Jun 2022 — Nov 2022 · BucharestInherited legacy systems nobody understood anymore and made them maintainable. Then made them cheaper.
- ›Mapped dependencies from scratch, identified failure points, and restored legacy systems to a maintainable state.
- ›Led a cloud cost optimisation initiative: mapped dependencies, cut redundancy, and reduced infrastructure spend by ~37% on services totalling ~$900K per month.
- Cloud Cost
- Architecture
- Legacy Recovery
Head of Development · Bright Spaces
Apr 2021 — Jun 2022 · BucharestBrought process and consistency to an early-stage team operating without one.
- ›Standardised development and deployment practices during early-stage growth.
- ›Built the client feedback triage process from scratch: how issues were captured, prioritised, and routed.
Research & Development Specialist · Softbinator Technologies
Sep 2020 — Apr 2021 · BucharestPrototyped emerging technologies ahead of production adoption.
- ›Evaluated feasibility across Node.js, React Native, Go, Docker, and infrastructure architecture.
Chief Technology Officer · Hey, Be Well!
Jan 2020 — Sep 2020Set the technical foundation for a wellness social network and led a small team to initial delivery.
- ›Set architecture, stack, and infrastructure; coordinated a small team from early stage through initial delivery.
- ›The startup closed when the runway ran out. By then the initial technical foundation and platform architecture were in place.
- Node.js
- React
- React Native
- Go
- Docker
Head of Development · Swazm
Apr 2018 — Dec 2019Oversaw the full development lifecycle, from architecture to deployment.
- ›Led architecture through deployment across the stack.
- Node.js
- Vue
- React Native
- Go
- Docker
- Kubernetes
Research & Development Specialist · emia.com
Feb 2017 — Apr 2018Feature-rich frontend and backend development.
- ›Built across the stack with React, Go, and Docker.
- React
- Go
- Docker
Software Consultant / Developer · 4ideas · Bookster · Aroundwise · Findie · Freelance
2011 — 2017Full-stack consulting across a range of products and clients.
- ›UI/UX development, backend planning, and deployment across PHP, Node.js, React, Python, and WordPress.
- PHP
- Node.js
- React
- Python
- WordPress
Skills & Stack
# Languages & Frameworks
- Node.js
- Python
- Go
- JavaScript / TypeScript
- Vue
- React
- React Native
- PHP
- MongoDB
- MariaDB
- PostgreSQL
# Infrastructure & DevOps
- Kubernetes
- Docker Swarm
- Cloud
- Service Migrations
- Data Pipelines
- ML Engineering
- AI Ops
- Traefik
- WireGuard
- Hetzner
- AWS S3
- Cloudflare
- CI/CD
- Redis
- RabbitMQ
# Data & AI
- Qdrant
- vLLM
- ONNX Runtime
- Agentic AI systems
- Embedding
- Model fine-tuning
- Dataset curation
# Architecture
- Distributed systems
- Microservices
- 3D rendering pipelines (BabylonJS)
- Platform engineering
Get in touch
Building something ambitious, or untangling something that's grown messy? Let's talk.
- phone
- linkedin.com/in/alexleca ↗
- location
- Bucharest, Romania